The Austin City Limits Music Festival will take place early and middle October this year. The talent is getting ready to be announced shortly. I guarantee it will be great. However, the cost of tickets has gotten a little pricey with each weekend costing over $200.00.
If you are planning on coming, you should book your transportation and hotels now. Don't come without reservations because everything will be sold out including planes.
I wrote an article about The Austin City Limits Music festival for Yahoo Voices a couple of years ago. On one hand, it is somewhat outdated but still timely. The article mostly focused on Austin weather which can be a factor. No one ever knows what to expect from Central Texas weather. Be certain to keep your eye on the weather.